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Ruukki smart roof now ready

Ruukki smart roof has now been enhanced and is ready to save people and buildings. Ruukki’s solution improves the safety of buildings, especially at northerly latitudes, where the impact of snow loads on roofs can quickly change. Using wireless technology, Ruukki smart roof detects changes in snow loads on roofs and reports them. Ruukki smart roof can be installed on new and old roofs alike where Ruukki’s load-bearing sheets have been used.

“As well as improving the safety of buildings, Ruukki smart roof also means savings in property maintenance costs. With the smart roof innovation, needless clearing of snow from roofs is history. This enables maintenance companies to prioritise assignments according to urgency,” explains Jouni Metsämäki, SVP, Building Components, at Ruukki.

Ruukki smart roof lends itself to the roofs of industrial, commercial and logistics buildings, as well as to the roofs of public premises such as airport terminals and sports centres.

“Ruukki’s innovation of monitoring snow loads on roofs is a prime example of an application where we can put our technological know-how to good use. We have high expectations of Ruukki smart roof since the product benefits the building’s owner, occupants and the property maintenance company. We also have ideas about how to further develop the product,” enthuses sales manager Mika Nurminen at MeshWork Wireless.

The smart roof uses Seemoto software, which enables information to be transmitted to more than one computer or even to mobile devices. The software is used, for instance, in applications where thermostatic control and control of conditions is required, such as in cold storage equipment in shops and in the transportation of foodstuffs and medicines.

How a change in snow load is detected and how an alert is sent

The transmitter attached to the underside of load-bearing profiles detects changes in the snow load. The greater the loading on the roof, the more the load-bearing sheet yields. The transmitter sends data about the changed conditions by radio frequency to the connector point.

The connector point transmits the data wirelessly to the service provider’s server. Building-specific limit values for the permitted loadings on the roof have been specified for the software on the server, which sends automatically sends an alert once the limit values have been exceeded. Alerts may be made to an email address or mobile phone.

Limit values for loading are determined separately for each building and calculated using the Poimu dimensioning program for Ruukki’s load bearing profile sheets. Determination takes into account the type and material thickness of the load-bearing sheet, the design model, building spans and the location of the sensor in the structure.

By logging onto the service provider’s website, the Ruukki smart roof solution can also examine temperature and humidity as well as snow load.

Service ensures performance

The smart roof package includes load-bearing sheets, a load meter, amplifier, radio transmitter and routers. On top of this, Ruukki provides technical support with the structural design of load-bearing sheets and the positioning of sensors, together with the delivery and installation of smart roof hardware products. Ruukki is also responsible for testing performance, data transmission to the service provider’s server and for making the information available to the customer.

The system stores the data measured. Snow loads on the roof can be examined for the period requested and information can be obtained about changes in snow loads. The system can also be linked to a GPS system and the main user can also grant a third party a viewing right to the system to enable, fort example, a maintenance company to locate future sites on the map.

Ruukki smart roof works in conjunction with Ruukki’s load-bearing sheets and has been designed to work in warm indoor premises in corrosion classes C1 and C2. It is currently available in Finland, Norway and Sweden.

During the past two winters in the Nordic countries, snow loads on many roofs have exceeded the maximum permitted limits. Smart roof also means savings in property maintenance costs. If needless clearing of snow can be avoided twice, the outlay in Ruukki smart roof will have already paid for itself.

For further information, please contact; Jouni Metsämäki, SVP, Building Components, Ruukki Construction, tel. +358 40 544 6775 jouni.metsamaki(at)

For further information, please contact; Mika Nurminen, Sales Manager, MeshWorks Wireless, tel. +358 40 779 9990 mika.nurminen(at)

Ruukki provides its customers with energy-efficient steel solutions for better living, working and moving. Ruukki operates in some 30 countries and employs around 11,800 people. Net sales in 2011 totalled EUR 2.8 billion. The company's share is quoted on NASDAQ OMX Helsinki (Rautaruukki Oyj: RTRKS).

“About MeshWorks Wireless - MeshWorks Wireless Ltd. focuses on wireless sensor network technologies and business solutions utilizing these disruptive technologies. Seemoto branded solutions from MeshWorks provide customers with automated data collection, tracking, monitoring, analyzing and control solutions together with comprehensive IM framework supporting networked services. The company is based in Tampere, Finland and it is part of e-Bros Corporation. Visit and